NAME

tcgetsid — get session ID associated with a controlling terminal

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <termios.h>

pid_t
tcgetsid(int fd);

DESCRIPTION

The tcgetsid() function returns the process group ID of the session leader for a controlling terminal specified by fd.

ERRORS

If an error occurs, tcgetsid() returns -1 and the global variable errno is set to indicate the error, as follows:

[EBADF]

The fd argument is not a valid file descriptor.

[ENOTTY]

The calling process does not have a controlling terminal or the underlying terminal device represented by fd is not the controlling terminal.

SEE ALSO

getsid(2), setsid(2), tcgetpgrp(3), tcsetsid(3)

STANDARDS

The tcgetsid() function conforms to X/Open Portability Guide Issue 4, Version 2 (“XPG4.2”).